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FirstExample.java
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/**
 * This example shows 5 windows. A dockable is created for every window. 4 dockables are docked in  
 * tab docks. The tab docks are docked in split docks. 1 dockable is floating.
 * The dockables can be moved around by dragging the tabs and by dragging their content.
 * 
 * @author Heidi Rakels
 */
public class FirstExample extends JPanel
{

	// Static fields.

	public static final int FRAME_WIDTH = 600;
	public static final int FRAME_HEIGHT = 450;

	// Constructor.

	public FirstExample(JFrame frame)
	{
		super(new BorderLayout());

		// Create the dock model for the docks.
		FloatDockModel dockModel = new FloatDockModel();
		dockModel.addOwner("frame0", frame);

		// Give the dock model to the docking manager.
		DockingManager.setDockModel(dockModel);

		// Create the content components.
		TextPanel textPanel1 = new TextPanel("I am window 1.");
		TextPanel textPanel2 = new TextPanel("I am window 2.");
		TextPanel textPanel3 = new TextPanel("I am window 3.");
		TextPanel textPanel4 = new TextPanel("I am window 4.");
		TextPanel textPanel5 = new TextPanel("I am window 5.");

		// Create the dockables around the content components.
		Dockable dockable1 = new DefaultDockable("Window1", textPanel1, "Window 1", null, DockingMode.ALL);
		Dockable dockable2 = new DefaultDockable("Window2", textPanel2, "Window 2", null, DockingMode.ALL);
		Dockable dockable3 = new DefaultDockable("Window3", textPanel3, "Window 3", null, DockingMode.ALL);
		Dockable dockable4 = new DefaultDockable("Window4", textPanel4, "Window 4", null, DockingMode.ALL);
		Dockable dockable5 = new DefaultDockable("Window5", textPanel5, "Window 5", null, DockingMode.ALL);

		// Create the tab docks.
		TabDock topTabDock = new TabDock();
		TabDock bottomTabDock = new TabDock();
		TabDock rightTabDock = new TabDock();

		// Add the dockables to these tab docks.
		topTabDock.addDockable(dockable1, new Position(0));
		topTabDock.addDockable(dockable2, new Position(1));
		bottomTabDock.addDockable(dockable3, new Position(0));
		rightTabDock.addDockable(dockable4, new Position(0));

		// The windows of the tab docks should be able to split.
		// Put the tab docks in split docks.
		SplitDock topSplitDock = new SplitDock();
		topSplitDock.addChildDock(topTabDock, new Position(Position.CENTER));
		SplitDock bottomSplitDock = new SplitDock();
		bottomSplitDock.addChildDock(bottomTabDock, new Position(Position.CENTER));
		SplitDock rightSplitDock = new SplitDock();
		rightSplitDock.addChildDock(rightTabDock, new Position(Position.CENTER));
		
		// Add the 3 root docks to the dock model.
		dockModel.addRootDock("topdock", topSplitDock, frame);
		dockModel.addRootDock("bottomdock", bottomSplitDock, frame);
		dockModel.addRootDock("rightdock", rightSplitDock, frame);
			
		// Dockable 5 should float. Add dockable 5 to the float dock of the dock model (
		// The float dock is a default root dock of the FloatDockModel.
		FloatDock floatDock = dockModel.getFloatDock(frame);
		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
		floatDock.addDockable(dockable5, new Point(screenSize.width / 2, screenSize.height / 2), new Point());

		// Create the split panes.
		JSplitPane leftSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
		leftSplitPane.setDividerLocation(250);
		JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
		splitPane.setDividerLocation(400);

		// Add the root docks to the split panes.
		leftSplitPane.setLeftComponent(topSplitDock);
		leftSplitPane.setRightComponent(bottomSplitDock);
		splitPane.setLeftComponent(leftSplitPane);
		splitPane.setRightComponent(rightSplitDock);
		
		// Add the split pane to the panel.
		add(splitPane, BorderLayout.CENTER);
		
	}
	
	/**
	 * This is the class for the content.
	 */
	private class TextPanel extends JPanel implements DraggableContent
	{
		
		private JLabel label; 
		
		public TextPanel(String text)
		{
			super(new FlowLayout());
			
			// The panel.
			setMinimumSize(new Dimension(80,80));
			setPreferredSize(new Dimension(150,150));
			setBackground(Color.white);
			setBorder(BorderFactory.createLineBorder(Color.lightGray));
			
			// The label.
			label = new JLabel(text);
			label.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
			add(label);
		}
		
		// Implementations of DraggableContent.

		public void addDragListener(DragListener dragListener)
		{
			addMouseListener(dragListener);
			addMouseMotionListener(dragListener);
			label.addMouseListener(dragListener);
			label.addMouseMotionListener(dragListener);
		}
	}

	// Main method.
	
	public static void createAndShowGUI()
	{
		
		// Create the frame.
		JFrame frame = new JFrame("First Example");

		// Create the panel and add it to the frame.
		FirstExample panel = new FirstExample(frame);
		frame.getContentPane().add(panel);
		
		// Set the frame properties and show it.
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
		frame.setLocation((screenSize.width - FRAME_WIDTH) / 2, (screenSize.height - FRAME_HEIGHT) / 2);
		frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
		frame.setVisible(true);
		
	}

	public static void main(String args[]) 
	{
        Runnable doCreateAndShowGUI = new Runnable() 
        {
            public void run() 
            {
                createAndShowGUI();
            }
        };
        SwingUtilities.invokeLater(doCreateAndShowGUI);
    }
	
}
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